Mathematics
Grade9
Easy

Question

In Figure, ABCD is a parallelogram, AE ⊥ DC and CF ⊥ AD. If AB = 16 cm, AE = 8 cm and CF = 10 cm, find AD.

  1. 8 cm
  2. 12.8 cm
  3. 8.6 cm
  4. 4 cm

The correct answer is: 12.8 cm


    12.8 cm
    Area of parallelogram = base x height.
    This implies that  AB x AE = AD x CF
    16 x  8= AD x 10 => AD = 128/10 = 12.8 cm

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